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Adrian Chadd 46634305f4 Migrate the ath_hal_filltxdesc() API to take a list of buffer/seglen values.
The existing API only exposes 'seglen' (the current buffer (segment) length)
with the data buffer pointer set in 'ds_data'.  This is fine for the legacy
DMA engine but it won't work for the EDMA engines.

The EDMA engine has a significantly different TX descriptor layout.

* The legacy DMA engine had a ds_data pointer at the same offset in the
  descriptor for both TX and RX buffers;
* The EDMA engine has no ds_data for RX - the data is DMAed after the
  descriptor;
* The EDMA engine has support for 4 TX buffer/segment pairs in the TX
  DMA descriptor;
* The EDMA TX completion is in a different FIFO, and the driver will
  'link' the status completion entry to a QCU by a "QCU ID".
  I don't know why it's just not filled in by the hardware, alas.

So given that, here are the changes:

* Instead of directly fondling 'ds_data' in ath_desc, change the
  ath_hal_filltxdesc() to take an array of buffer pointers as well
  as segment len pointers;
* The EDMA TX completion status wants a descriptor and queue id.
  This (for now) uses bf_state.bfs_txq and will extract the hardware QCU
  ID from that.
* .. and this is ugly and wasteful; it should change to just store
  the QCU in the bf_state and save 3/7 bytes in the process.

Now, the weird crap:

* The aggregate TX path was using bf_state->bfs_txq for the TXQ, rather than
  taking a function argument.  I've tidied that up.
* The multicast queue frames get put on a software TXQ and then that is
  appended to the hardware CABQ when appropriate.  So for now, make sure
  that bf_state->bfs_txq points at the CABQ when adding frames to the
  multicast queue.
* .. but the multicast queue TX path for now doesn't use the software
  queue and instead
  (a) directly sets up the descriptor contents at that point;
  (b) the frames on the vap->avp_mcastq are then just appended wholesale
      to the CABQ.
  So for now, I don't have to worry about making the multicast path
  work with aggregation or the per-TID software queue. Phew.

What's left to do:

* I need to modify the 11n ath_hal_chaintxdesc() API to do the same.
  I'll do that in a subsequent commit.
* Remove bf_state.bfs_txq entirely and store the QCU as appropriate.
* .. then do the runtime "is this going on the right HWQ?" checks using
  that, rather than comparing pointer values.

Tested on:

* AR9280 STA/AP
* AR5416 STA/AP
2012-08-05 10:12:27 +00:00
bin sh: Fix EINTR race condition in "wait" and "set -T" using sigsuspend(). 2012-07-29 18:04:38 +00:00
cddl When we return with an error we cannot unlock the mutex, because 2012-08-01 19:27:12 +00:00
contrib Backport NFSv4 ACL fix from libarchive master branch. 2012-07-30 14:47:35 +00:00
crypto Merge OpenSSL 1.0.1c. 2012-07-12 19:30:53 +00:00
etc Revert SVN r238628 (mistake). 2012-07-19 22:41:00 +00:00
games Add a couple of nice quotes from Edward Everett Hale 2012-07-29 01:01:35 +00:00
gnu Backed out r228904, and added libstdthreads support to mdoc(7) to where 2012-07-26 11:10:25 +00:00
include The register_printf_render_std() function expects regular string. 2012-07-04 17:35:07 +00:00
kerberos5 Centralize the specification of the krb5 build tools. 2012-06-01 21:26:28 +00:00
lib Use calloc(). 2012-08-01 00:21:55 +00:00
libexec Ensure we align the stack to 8 bytes in rtld. 2012-08-04 05:30:20 +00:00
release Automatically generate hardware notes for bwn(4). 2012-06-28 10:21:25 +00:00
rescue Partial MFV (illumos-gate 13753:2aba784c276b) 2012-07-30 23:14:24 +00:00
sbin Document "destroy" as an alias for "stop". 2012-08-03 20:30:40 +00:00
secure Sort ASM definitions by crypto module for slightly easier maintenance. 2012-07-12 21:31:53 +00:00
share Use new method of assigning IPv4 addresses 2012-08-05 08:19:52 +00:00
sys Migrate the ath_hal_filltxdesc() API to take a list of buffer/seglen values. 2012-08-05 10:12:27 +00:00
tools Break out the parsing code from main() and modularise things a little. 2012-07-30 01:42:22 +00:00
usr.bin - Add myself to calendar.freebsd 2012-08-01 17:48:38 +00:00
usr.sbin Update my e-mail to my FreeBSD one. 2012-07-19 08:56:30 +00:00
COPYRIGHT
LOCKS
MAINTAINERS Add isci(4) driver for amd64 and i386 targets. 2012-01-31 19:38:18 +00:00
Makefile Import OpenSSL 1.0.1c. 2012-07-11 23:31:36 +00:00
Makefile.inc1 Partial MFV (illumos-gate 13753:2aba784c276b) 2012-07-30 23:14:24 +00:00
ObsoleteFiles.inc Removing bsd{ar,ranlib} found on my ancient installation. 2012-07-18 05:50:40 +00:00
README Import OpenSSL 1.0.1c. 2012-07-11 23:31:36 +00:00
UPDATING Pull the tier-2 card and change the sparc64 ZFS loader to no longer probe 2012-07-27 18:23:11 +00:00

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